Pythium Crown and Root Rot
Pythium spp.
1 host plant · Oomycete
Last updated
Data Coverage 3 of 6 dimensions
Pythium crown and root rot is caused by fungi which can also cause damping off of new grass plantings. The rot causes a general decline of the turfgrass in patches or in large areas.
Start with sanitation: remove and dispose of affected material as you find it. Thin dense growth to improve air circulation, and redirect irrigation away from foliage. If the condition persists despite cultural adjustments, your local Extension office can help identify the pathogen and recommend targeted treatments.
Quick Reference
Agent Type
oomycete
Causal Agent
Pythium spp.
Host Plants
1
Management
Cultural Controls
- Best results occur when several cultural and chemical practices are integrated together.
- Use certified planting stock and set out in fertile, deep, well-drained soil (3- to 4-ft water table in winter) that has not grown small fruit (strawberry, raspberry, brambles) for several years.
- Keep affected plantings economically productive as long as possible by good cultural and fertilizing practices.
- Plant resistant cultivars if available.
- Subsoil in alleyways to promote drainage away from plants in winter.
- Install drain tiles in field to improve drainage.